They're modest by raw economic size, but outsized in relevance due to energy resources and geopolitical leverage.
Also I am surprised that China is so close to US (20 Trillion vs 31 Trillion). The gap is less than 2x now.
[1] https://en.wikipedia.org/wiki/List_of_countries_by_GDP_%28no...
You probably haven't turned on the news in a little while.